
<html>
<head>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../../resources/gc.js"></script>
</head>
<body>
<script>
promise_test(async t => {
  let iframe = document.createElement("iframe");
  document.body.appendChild(iframe);
  let iframe_exception_constructor = iframe.contentWindow.DOMException;
  let iframe_ac = new iframe.contentWindow.AudioContext();
  let iframe_constructor = iframe.contentWindow.MediaStreamAudioDestinationNode;
  iframe.remove();
  assert_throws_dom('NotAllowedError', iframe_exception_constructor, () => {
    let stream = iframe_ac.createMediaStreamDestination();
  });
  assert_throws_dom('NotAllowedError', iframe_exception_constructor, () => {
    let stream = iframe_ac.createMediaStreamDestination({
      "channelCount": 4,
      "channelInterpretation": "discrete"});
  });
  assert_throws_dom('NotAllowedError', iframe_exception_constructor, () => {
    let stream = new iframe_constructor(iframe_ac);
  });
}, 'MediaStreamAudioDestinationNode creation in closed iframe throws error');
</script>
</body>
</html>
